The green paradox: The metallurgical challenge of the energy transition
Keywords:
Bioethanol, corrosion, green inhibitors.Abstract
The energy transition towards the use of bioethanol in automobiles poses a “green paradox”: its high hygroscopicity facilitates water ingress and the formation of acetic acid, causing severe localized corrosion in engine metals. To overcome this challenge, materials science is developing molecular-level barriers. This article outlines the mechanisms behind this damage and explores three cutting-edge strategies: the use of protective amines in bio-blends, the design of “tailor-made” petrochemical additives, and the development of botanical “green inhibitors,” ensuring durable and truly sustainable engines.
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